Di-(beta-hydroxyalkyl)-2-(alkyl carbamyl-oxy)- alkylamines



suffer greatly from the facts that the'intermedi- 15 sates used in theprocesses involved are difficult to UNIT-EH STATE-sram ossre DI: (BETA HYDHOXYALKXL) 72-: LKY CARBAMYUOXY) -ALKYLAMINES Robert T. Olsen, Belvidere, N. J., assignor to General Aniline & Film Corporation, New York, N. Y., a corporation f :Delaware' NoxDrawingc Application November 5, 1948, SerialNo. 58,611

2 Claims. (Cl. 260-482) l l The present invention relates to water-soluble, molar quantities of an hydroxyalkylamineof the amino-allgyl carbamates and to a method'of pro formula: ducing the same.

Many methods have been proposed in the past H for the preparation of compounds within the (0 201120) H general class of aminoalkyl carba-mates-J These R involve; for instance, the reaction of an-acyl or halide and-an-amine as per- U.S.-P. 2,432,049,-the= X reaction ofan alkylamino alcoholconsecutively V h p110Sgene-and"amm0ni8r as P; wherein'R andfn have the valuesgiven above, 37 3 a d-thereacti'onof an aryl isocya and X' represents the radicals necessary'to com- W n y ino alcohol in pursuance plete a saturated five or six membered nitroge U. S P 2,13 ,0 and nous heterocyclic nucleus or represents the The value of these and other sin'iilarproposals grouping:

N-(CE2OH20),{H

.procure, and the productsresulting-irom'such Hie CH2 processes are water-insoluble. Becauseof such CH2 water-insolubility,- the-field of application of the I productsjs greatly curtailed; gflewith" an alkylor aryl-isocyanate.- The-reaction,

I have' now discovered that water-soluble which'is one'ofadditiol'l; p 'by aminoalkyl carbama-tes in Which acarbamyl the: following formula in W R and n group is linked to an amino group through an" have the Valuesgiven -1' alkyl ether group and having a widefiel'd' of R industrialapplication can'be expeditiously pre- 6; \N (CHCHO)nH V v pared in extremely high yields by reacting an hydroxyalkylamine with an alkylor" ary1' -is'o-' R cyanate. R Such-water-soluble aminoalkyl carbamates and N( 2 2 )n?N-H R' their preparation as above constitute the pur- 01-. R' Poses and Objet570f$h-=plesent'invention- The temperature at which the reaction takes "The-twater-soluble aminealkyl G b 1- place may vary but it is generally Within the templated her y e graphicallyrepresented" range of from about 40 to 100 C. The reaction by the followingformulae: takes place by mixing the reactants and where R 5+ necessary subjecting them to heat to bring them withinthe 'aforestated temperature; On cool- /N(CH2CH2O)" NHR' ing, the "carbamates'solidify andmay be recov- R ered'ina yield approximating100% of theory." Examples'of hydroxy alkylamines which may w be'utilized are triethanolamine, N-B-hydroxyethytmorpholine', N-fi-hydroxyethyl 'piperazine', N-B-hydroxyethyl pyrrolidine, N p-hydroxy ethyl-2-methyl piperidin'e; N e-hydroxyethyl whereinR-is'hydroxyallyl or hyd'roxy po1yalky1- tetrahydroquinoline, the addition product of oxyalkyl; n is a-whole-numben i; e., 1 or more; amm'onia with more than 3 mols of ethylene Y represents the radicalsneees'sary to complete a oxide, the addition product of m'orpholine with five or six-membe-red saturated heterooyclic 10 mols of ethylene oxide, the additiori'product nitrogenous nucleus or of piperidine with mols of ethylene oxide, the addition'product of pyrrolidine with 15 m0ls of N OH2CH2O)"CNHR w ethylene oxide, the addition product of piper-'- mc C azine with mols of ethylene oxide, and the like.

1 11; The aforestated addition products of the amines with ethylene oxide may be conveniently preand-=R""is"alkyl'or'aryl: pared by the methods described in U. SI- P.

The products are prepared by heating'equi- 4,970,578.

Suitable alkyl isocyanates for producing the carbamates by reaction with the hydroxy alkylamines are methyl isocyanate, ethyl isocyanate, n-butyl isocyanate, octyl isocyanate, dodecyl isocyanate, octadecyl isocyanate, and the like. Examples of aryl isocyanates which have been found to be effective are phenyl isocyanate, a-naphthyl isocyanate, c-naphthyl isocyanate, p-diphenyl isocyanate, and the like. The isocyanates are prepared by the conventional method of reacting phosgene with the desired amine salt, i. e., the hydrochloride in an inert solvent or diluent.

The animonalkyl carbamates contemplated herein have a wide field of technical application, i. e., as surface active agents, pharmaceuticals and biocides. The activity of the compounds as surface active agents may be modified, if desired, by reacting the hydroxyl groups thereof with ethylene oxide to impart even greater water solubility to the carbamates.

The invention is further explained by the following examples, but it is to be understood that the invention is not restricted thereto.

Example 1.Dz'- (p-hydroxyethyl) -2- (octadecylcarbamyZ-oxy) -ethyl amine In a 125 ml. Erlenmeyer flask was placed 59.2 grams (.2 mol) of n-octadecyl isocyanate and 29.6 grams (.2 mol) of triethanolamine. The mixture became hot spontaneously from the exothermic reaction. After thorough mixing, the contents were cooled to form a waxy product. The solid forms foamy solutions with hot Water. The yield was 89 grams, or 100% of the theoretical.

Example 2. 2- (octadecylcarbamyl-oxy) -ethyl morpholine In a 125 ml. Erlenmeyer flask was placed 59.2 grams (.2 mol) of octadecyl isocyanate and 26.2 grams (.2 mol) of N -B-hydroxy-ethyl morpholine. The reactants were Well mixed and heated over a flame to about 60 C. An exothermic reaction occurred. After the reaction mixture had been kept warm for about fifteen minutes, the mixture was cooled to give 85.4 grams of crystalline product, or 100% of the theoretical. A small amount was recrystallized from acetone, yielding a prodnot of melting point 54-55 C.

Analysis: C, 69.68; H, 11.44; ash, trace.

Calcd: C, 70.34; H, 11.81.

Example 3.-Di- (B-hyclroxyethyl) -2- (phenylcarbamyl-oxy) -ethylamine In a 200 ml. 3-necked flask equipped with a stirrer, dropping funnel and thermometer was placed 14.9 grams (.1 mol) of triethanolamine. With good stirring, there was added over one hour 11.9 grams (.1 mol) of phenyl isocyanate. The reagent was added at such a rate that each drop was well mixed in before the next addition. The temperature spontaneously rose to 42 C. when two-thirds of the isocyanate had been added. The temperature was raised to 70 C. to reduce the viscosity and the rest added dropwise. The reaction mixture was stirred at 90 C. for minutes and cooled. The product, a yellow viscous liquid, weighed 26.8 grams, 100% of the theoretical.

Example 4 .The procedure is the same as in Example 1 excepting there is used .2 mol of butyl isocyanate in lieu of the octadecyl isocyanate. The characteristics of the products are similar to those of the product of Example 1.

Example 5 The procedure is the same as in Example 1 excepting that the triethanolamine is replaced by the addition product of 1 mol of piperazine with 25 mols of ethylene oxide. A di-ester is obtained which is very effective as a wetting, cleansing and emulsifying agent.

The biocidal effect of the products is illustrated by the following examples.

Example 6 The product of Example 1 is utilized as a fungicide according to the slide germination technique described by S. E. A. McCallan et al. in Contribution of the Boyce Thompson Institute, 4, 233 (1932), 9, 249 (1938), 10, 329 (1939), 12, 49 (1941), 12, 431 (1942). The organism employed was Sclerottnia fructicola.

The result of the test showed 59% germination at 0.001%.

Example 7 The same product was tested as a mothproofing agent while operating as follows: Five carpet-beetle larvae were maintained in a Petri dish containing a 1 /2 inch square patch of wool broadcloth containing about 1% by weight of the material to be tested. After 30 days the appearance of the cloth was noted, mothproofing action being indicated if the cloth shows no visible damages.

The result of this test showed that all the larvae were alive after the 30 day period and that only very slight damage had been done to the cloth.

Various modifications of the invention will ocour to persons skilled in this art, and I therefore do not intend to be limited in the patent granted except as necessitated by the appended claims.

I claim:

1. Di- (beta-hydroxyalkyl) -2- (alkyl carbamyloxy) -alkylamine.

2. Di-(fl-hydroxyethyl) 2 (octadecyl carbamyl-oxyl) -ethyl-amine.

ROBERT T. OLSEN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,970,578 Schoeller Aug. 21, 1934 2,033,740 Rider Mar. 10, 1936 2,089,985 Ruigh Aug. 17, 1937 2,137,042 Christiansen Nov. 15, 1938 2,161,615 Dietrich June 6, 1939 2,187,823 Ulrich et al Jan. 23, 1940 2,293,494 De Groote Aug. 18, 1942 2,374,367 Major et a1. Apr. 24, 1945 2,409,001 Shelton Oct. 8, 1946 2,075,230 Schatz Mar. 30, 1947 2,432,049 Swan Dec. 2, 1947 OTHER REFERENCES Gardner et al.: Jour. Amer. Chem. Soc., vol. 55 (1933), pp. 3823-3824.

Cheney et al.: Jour. Amer. Chem. Soc., vol. 64 (1942), pp. 970-973.

Kitchen et al.: Org. Chem., vol. 8 (1943), pp. 338-341. 

1. DI-(BETA-HYDROXYALKYL) -2-(ALKYL CARBAMYLOXY) -ALKYLAMINE. 